Dave Jackson's DSP 1981 Isuzu I-Mark

Grassroots Motorsports Magazine

September/October 1994. P. 15.

The nice thing about DSP Solo II class is that almost anything
can be competitive. Case in point: Dave Jackson's 1981 Isuzu I-Mark.

Since being infused with a healthy dose of bolt-on performance, this
former grocery-getter has racked up an impressive list of victories,
including the 1991, 1992, 1993 Northern California Sports Car Council
championships (Dave predicts the trend will continue into 1994). He
also took third place in 1993 points in his local SCCA region behind
former national champion Bill Condrashoff and perennial front-runner
Chris Cox.

To help the car move out of it's own way, the 1853cc engine was
bored .030" over. The head was port matched, and a pair of SK 40mm
sidedraft carbs were added. A custom-made header, 2 1/2-inch exhaust
pipe and Walker muffler don't hurt, and a second adjustable Panhard
rod was added to the rear suspension. Dave also uses 215/50-13 BFG
tires on 13x8-inch Duralite rims.